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Thread: 5W-40 oil

  1. #21
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    Quote Originally Posted by DiscoDB View Post
    Yet to see Shane do his promised oil viscosity video - this would be a good follow up.
    Yeah, havent had any spare time to piece that one together
    Shane
    2005 D3 TDV6 loaded to the brim with 4 kids!
    http://www.aulro.com/afvb/members-rides/220914-too-many-defender-write-ups-here-time-d3.html

  2. #22
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    Quote Originally Posted by shanegtr View Post
    Yeah, havent had any spare time to piece that one together
    I don’t envy you making that one. Understanding oil grades is one thing, understanding journal bearing design, clearances, minimum film thickness, flow rates, and cooling is another matter altogether.

  3. #23
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    Intersting for sure. I get my 5w30 from the local indy as this is guaranteed to to be right gade but on my 300,000Km 2.7 D4 do i try 5w40 as I know she is getting worn. I do changes every 10,000km or 6 months but there is no definative answer to the age old question.

  4. #24
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    5W-40 oil

    You won’t get a definitive answer because your engine is now well outside of warranty. The only definitive answer is for the period the engine is under warranty and in which case you only use the oil JLR recommend.

    If you have good oil pressure, change the oil ahead of schedule, and you don’t use your D4 under adverse conditions (high loads, hot conditions, high oil temps) then 5W-30 to the right spec (or better) is fine.

    If you don’t meet the above, then going to a 5W-40 oil, again to the right spec (or better), can be beneficial.

    Neither option is entirely wrong - just one gives better fuel economy, and the other better wear protection.

    The caveat on this is extended use under severe conditions which leads to very high oil temps really could use the +10 on the oil grade. Particularly if you have any risk of oil dilution.

    The real issue is we are now using these engines well outside what Ford originally designed them for, hence outside of warranty you now pick the oil which suits the conditions you operate in. The good news is the specs for oils available today are certainly better than the oil specs available when the 2.7 TDV6 was originally designed - so you have plenty of good choices.

  5. #25
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    Looking forward to the tear down of the 2.7 engine on LRTime with 270k kms will be super interesting what the wear looks like.

  6. #26
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    Quote Originally Posted by PerthDisco View Post
    Looking forward to the tear down of the 2.7 engine on LRTime with 270k kms will be super interesting what the wear looks like.
    Will be interesting that's for sure

  7. #27
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    5W-40 oil

    Quote Originally Posted by PerthDisco View Post
    Looking forward to the tear down of the 2.7 engine on LRTime with 270k kms will be super interesting what the wear looks like.
    So what was your thoughts seeing the strip down?

    The mains looked good for an easy 500-600K, pity the conrod bearings were already worn beyond their tolerance limit.

    The problem is we don’t know what the original clearances were other than assuming they could have been at the lower end of the min/max spec range.

  8. #28
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    5W-40 oil

    Quote Originally Posted by DiscoDB View Post
    So what was your thoughts seeing the strip down?

    The mains looked good for an easy 500-600K, pity the conrod bearings were already worn beyond their tolerance limit.

    The problem is we don’t know what the original clearances were other than assuming they could have been at the lower end of the min/max spec range.
    Some relief as similar age engines kms and service interval on mine.

    ShaneLR has 430k km on his so seems if Pommy Dave in the factory has properly made the crank and you’ve serviced it keep going.

    The fact you can’t get OEM bearings and the variable quality he’s finding on aftermarket items is more troubling. Best let sleeping dogs lie.

    If anything what Christian does well is triple check every component for tolerance.

    There’s plenty of guys who’ve dropped in new bearings but I’d guess taken no measurements before or after.

    What would definitely be worth doing is a big refresh on the heads as this is pretty standard on heavy diesel maintenance the heads will be done at half time of the full overhaul.

  9. #29
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    Quote Originally Posted by Meccles View Post
    Hi is anybody running a C3 or A3B4 synthetic oil like Penrite HPR5 in their diesel? I've got a RRS with a 3.0 SDV6 with 135000kms and must admit the German couple who post on youtube make some good points.
    5w-40 is listed for a Citroen C6 with a 2.7 TD.
    Clip below if you're interested

    Worst Diesel Engine on the Planet ? Ford Lion V6 - Land Rover TDV6 SDV6 - YouTube
    yes, I listen to Christian, he is, IMO the best automotive Engineer out there
    not sure of his education, but for me, what he says goes, I use 5w40
    I served time with Cummins Engine Co, Au, wished I had Christians brain

  10. #30
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    Quote Originally Posted by stuarth44 View Post
    yes, I listen to Christian, he is, IMO the best automotive Engineer out there
    not sure of his education, but for me, what he says goes, I use 5w40
    I served time with Cummins Engine Co, Au, wished I had Christians brain
    By his own admission, Christian is an amateur enthusiast. That said, he is intelligent and very well researched, so certainly worth listening to. I would still verify for myself though.
    2010 TDV6 3.0L Discovery 4 SE, Alaska White, GME XRS-330c, IIDTool BT, Traxide D3-DU Dual Battery Kit, Apple CarPlay, Power and Heated Seat retrofit, Rhino Rack Batwing Awning (Part time install), BFG KO2 for play

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